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Emerald|Natural|GIA

0.51ct H SI1 Emerald Natural Diamond

ID • H/SI1 • GIA 2557428154

Certificate GIA 2557428154

Diamond specifications and retailer prices

From HK$3,052 HKD
$389 USD
As of October 31, 2026
Save HK$5,806 HKD (66%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: HK$8,858 HKD at MOH London · As of October 26, 2026
View at MOH London

About this 0.51ct natural emerald diamond

This 0.51ct natural emerald sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557428154. Listed at 25 retailers as of October 26, 2026, with prices from HK$3,052 to HK$8,858, a HK$5,806 spread on the same certified stone. MOH London lists it at HK$8,858. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle47.3°
Pavilion angle56.2°
OriginNatural
Grading LabGIA
CertificateGIA 2557428154
Dimensions5.83 × 3.73 × 2.47 mm
L/W Ratio1.56
Girdle conditionPolished
Top View
5.83 mm3.73 mm0.51 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557428154
Side View
Table 69.0%Crown 47.3°Girdle: MED-STKPavilion 56.2°Culet: NDepth 66.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: HK$8,858 HKD|Low: HK$3,052 HKD|High: HK$14,679 HKD|Avg: HK$5,017 HKD|-4.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
October 31, 2026
Retailer 20HK$3,052 HKD
Retailer 9HK$3,123 HKD
Retailer 10HK$3,138 HKD
Retailer 8HK$3,381 HKD
Retailer 6HK$3,515 HKD
Retailer 4HK$3,640 HKD
Retailer 7HK$3,640 HKD
Retailer 19HK$3,899 HKD
Retailer 5HK$3,939 HKD
Retailer 2HK$4,205 HKD
Retailer 11HK$4,237 HKD
Retailer 12HK$4,237 HKD
Retailer 14HK$4,237 HKD
Retailer 16HK$4,394 HKD
Retailer 23HK$4,597 HKD
Retailer 13HK$4,658 HKD
Retailer 17HK$4,678 HKD
Retailer 3HK$4,692 HKD
Retailer 24HK$5,021 HKD
Retailer 15HK$5,573 HKD
Retailer 18HK$5,627 HKD
Retailer 21HK$5,762 HKD
MOH LondonHK$8,858 HKD
Retailer 22HK$14,311 HKD

20 data points across 24 retailers

25 retailersHK$3,052 HKD to HK$8,858 HKD

A
Cheapest Retailer
-
HK$3,052 HKD
$389 USD
A
Retailer 2
-
HK$3,123 HKD
$398 USD
View
Final sale: no returns
A
Retailer 3
-
HK$3,138 HKD
$400 USD
View
A
Retailer 4
-
HK$3,381 HKD
$431 USD
View
A
Retailer 5
-
HK$3,515 HKD
View
A
Retailer 6
-
HK$3,640 HKD
$464 USD
View
A
Retailer 7
-
HK$3,640 HKD
$464 USD
View
A
Retailer 8
-
HK$3,899 HKD
$497 USD
View
A
Retailer 9
-
HK$3,939 HKD
$502 USD
View
B+
Retailer 10
-
HK$4,205 HKD
$536 USD
View
B+
Retailer 11
-
HK$4,237 HKD
$540 USD
View
B+
Retailer 12
-
HK$4,237 HKD
$540 USD
View
B+
Retailer 13
-
HK$4,237 HKD
$540 USD
View
B+
Retailer 14
-
HK$4,394 HKD
$560 USD
View
B+
Retailer 15
-
HK$4,597 HKD
£461 GBP
View
B+
Retailer 16
-
HK$4,658 HKD
£467 GBP
View
B+
Retailer 17
-
HK$4,678 HKD
£470 GBP
View
B+
Retailer 18
-
HK$4,692 HKD
$598 USD
View
B+
Retailer 19
-
HK$5,021 HKD
$640 USD
View
B
Retailer 20
-
HK$5,573 HKD
$710 USD
View
B+
Retailer 21
-
HK$5,627 HKD
€683 EUR
View
B+
Retailer 22
-
HK$5,762 HKD
ZAR 11,865 ZAR
View
Retailer 23
-
HK$5,978 HKD
A$1,172 AUD
View
Price last confirmed 28 days ago
Most Expensive
B
MOH London
2072DB740 · Oct 26
HK$8,858 HKD
£889 GBP
View
23 more retailers have this diamond
Prices start from HK$3,052 HKDSave up to HK$5,806 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.51ct Emerald
HK$3,052 HKD