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Emerald|Natural|GIA

0.51ct I SI2 Emerald Natural Diamond

EX • I/SI2 • GIA 5231237389

Certificate GIA 5231237389

Diamond specifications and retailer prices

From $639 USD
As of October 29, 2026
Save $556 USD (47%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,195 USD at MOH London · As of October 29, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231237389. Listed at 4 retailers as of October 29, 2026, with prices from $639 to $1,195, a $556 spread on the same certified stone. MOH London lists it at $1,195. 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
I
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5231237389
Dimensions5.33 × 3.94 × 2.57 mm
L/W Ratio1.35
Girdle conditionPolished
Key to symbols
Crystal
Top View
5.33 mm3.94 mm0.51 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231237389
Side View
Table 63.0%CrownGirdle: ThickPavilionCulet: NoneDepth 65.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,195 USD|Low: $609 USD|High: $1,248 USD|Avg: $734 USD|-3.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 4$639 USD
Retailer 7$640 USD
Retailer 2$645 USD
Retailer 3$658 USD
Retailer 6$660 USD
Retailer 5$711 USD
MOH London$1,195 USD

41 data points across 7 retailers

4 retailers$639 USD to $1,195 USD

B+
Cheapest Retailer
-
$639 USD
B
Retailer 2
-
$645 USD
£508 GBP
View
B
Retailer 3
-
$658 USD
View
Most Expensive
B
MOH London
33A742B39 · Oct 29
$1,195 USD
£941 GBP
View
3 more retailers have this diamond
Prices start from $639 USDSave up to $556 USD

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.

B+
0.51ct Emerald
$639 USD