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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 $554 AUD
$389 USD
As of October 31, 2026
Save $1,054 AUD (66%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $1,607 AUD 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 $554 to $1,607, a $1,054 spread on the same certified stone. MOH London lists it at $1,607. 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: $1,607 AUD|Low: $554 AUD|High: $2,664 AUD|Avg: $913 AUD|-4.5%
MOH London
Retailer 2
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Retailer 24
October 31, 2026
Retailer 20$554 AUD
Retailer 9$567 AUD
Retailer 10$569 AUD
Retailer 8$614 AUD
Retailer 6$638 AUD
Retailer 4$661 AUD
Retailer 7$661 AUD
Retailer 18$708 AUD
Retailer 5$715 AUD
Retailer 19$750 AUD
Retailer 11$769 AUD
Retailer 12$769 AUD
Retailer 14$769 AUD
Retailer 16$797 AUD
Retailer 23$834 AUD
Retailer 2$845 AUD
Retailer 17$849 AUD
Retailer 3$851 AUD
Retailer 24$911 AUD
Retailer 15$1,011 AUD
Retailer 13$1,021 AUD
Retailer 21$1,046 AUD
MOH London$1,607 AUD
Retailer 22$2,597 AUD

21 data points across 24 retailers

25 retailers$554 AUD to $1,607 AUD

A
Cheapest Retailer
-
$554 AUD
$389 USD
A
Retailer 2
-
$567 AUD
$398 USD
View
Final sale: no returns
A
Retailer 3
-
$569 AUD
$400 USD
View
A
Retailer 4
-
$614 AUD
$431 USD
View
A
Retailer 5
-
$638 AUD
HK$3,500 HKD
View
A
Retailer 6
-
$661 AUD
$464 USD
View
A
Retailer 7
-
$661 AUD
$464 USD
View
A
Retailer 8
-
$708 AUD
$497 USD
View
A
Retailer 9
-
$715 AUD
$502 USD
View
B+
Retailer 10
-
$750 AUD
$527 USD
View
B+
Retailer 11
-
$769 AUD
$540 USD
View
B+
Retailer 12
-
$769 AUD
$540 USD
View
B+
Retailer 13
-
$769 AUD
$540 USD
View
B+
Retailer 14
-
$797 AUD
$560 USD
View
B+
Retailer 15
-
$834 AUD
£461 GBP
View
B+
Retailer 16
-
$845 AUD
£467 GBP
View
B+
Retailer 17
-
$849 AUD
£470 GBP
View
B+
Retailer 18
-
$851 AUD
$598 USD
View
B+
Retailer 19
-
$911 AUD
$640 USD
View
B
Retailer 20
-
$1,011 AUD
$710 USD
View
B+
Retailer 21
-
$1,021 AUD
€683 EUR
View
B+
Retailer 22
-
$1,046 AUD
ZAR 11,865 ZAR
View
Retailer 23
-
$1,085 AUD
View
Price last confirmed 28 days ago
Most Expensive
B
MOH London
2072DB740 · Oct 26
$1,607 AUD
£889 GBP
View
23 more retailers have this diamond
Prices start from $554 AUDSave up to $1,054 AUD

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
$554 AUD