Emerald|Natural|GIA

0.51ct H SI1 Emerald Natural Diamond

ID • H/SI1 • GIA 2557428154

Certificate GIA 2557428154

Diamond specifications and retailer prices

From €348 EUR
$389 USD
As of October 31, 2026
Save €635 EUR (65%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: €983 EUR at MOH London · As of November 1, 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 31, 2026, with prices from €348 to €983, a €635 spread on the same certified stone. MOH London lists it at €983. 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
Color
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: €983 EUR|Low: €348 EUR|High: €1,675 EUR|Avg: €572 EUR|-7.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 1, 2026
Retailer 21€348 EUR
Retailer 9€356 EUR
Retailer 10€358 EUR
Retailer 8€386 EUR
Retailer 6€401 EUR
Retailer 4€415 EUR
Retailer 7€415 EUR
Retailer 20€445 EUR
Retailer 5€449 EUR
Retailer 18€480 EUR
Retailer 11€483 EUR
Retailer 12€483 EUR
Retailer 14€483 EUR
Retailer 16€501 EUR
Retailer 2€523 EUR
Retailer 13€531 EUR
Retailer 17€534 EUR
Retailer 3€535 EUR
Retailer 24€573 EUR
Retailer 15€636 EUR
Retailer 19€642 EUR
Retailer 22€657 EUR
MOH London€983 EUR
Retailer 23€1,633 EUR

20 data points across 24 retailers

25 retailers€348 EUR to €983 EUR

A
Cheapest Retailer
-
€348 EUR
$389 USD
A
Retailer 2
-
€356 EUR
$398 USD
View
Final sale: no returns
A
Retailer 3
-
€358 EUR
$400 USD
View
A
Retailer 4
-
€386 EUR
$431 USD
View
A
Retailer 5
-
€401 EUR
HK$3,500 HKD
View
A
Retailer 6
-
€415 EUR
$464 USD
View
A
Retailer 7
-
€415 EUR
$464 USD
View
A
Retailer 8
-
€445 EUR
$497 USD
View
A
Retailer 9
-
€449 EUR
$502 USD
View
B+
Retailer 10
-
€480 EUR
$536 USD
View
B+
Retailer 11
-
€483 EUR
$540 USD
View
B+
Retailer 12
-
€483 EUR
$540 USD
View
B+
Retailer 13
-
€483 EUR
$540 USD
View
B+
Retailer 14
-
€501 EUR
$560 USD
View
B+
Retailer 15
-
€523 EUR
£460 GBP
View
B+
Retailer 16
-
€531 EUR
£467 GBP
View
B+
Retailer 17
-
€534 EUR
£470 GBP
View
B+
Retailer 18
-
€535 EUR
$598 USD
View
B+
Retailer 19
-
€573 EUR
$640 USD
View
B
Retailer 20
-
€636 EUR
$710 USD
View
B+
Retailer 21
-
€642 EUR
View
B+
Retailer 22
-
€657 EUR
ZAR 11,865 ZAR
View
Retailer 23
-
€682 EUR
A$1,172 AUD
View
Price last confirmed 28 days ago
Most Expensive
B
MOH London
2072DB740 · Nov 1
€983 EUR
£865 GBP
View
23 more retailers have this diamond
Prices start from €348 EURSave up to €635 EUR

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
€348 EUR