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Emerald|Natural|GIA

0.51ct D SI2 Emerald Natural Diamond

EX • D/SI2 • GIA 2566197575

Certificate GIA 2566197575

Diamond specifications and retailer prices

From £358 GBP
As of November 6, 2026
Save £319 GBP (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £677 GBP at Frank Darling · As of November 6, 2026
View at Frank Darling

About this 0.51ct natural emerald diamond

This 0.51ct natural emerald sits in the half to three-quarter carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566197575. Listed at 9 retailers as of November 6, 2026, with prices from £358 to £677, a £319 spread on the same certified stone. Frank Darling lists it at £677. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566197575
Dimensions5.55 × 3.89 × 2.50 mm
L/W Ratio1.43
Culet sizeNone
Top View
5.55 mm3.89 mm0.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566197575
Side View
Table 70.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 64.2%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £677 GBP|Low: £223 GBP|High: £682 GBP|Avg: £444 GBP|-0.8%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10£223 GBP
Retailer 8£358 GBP
Retailer 9£375 GBP
Retailer 4£381 GBP
Retailer 6£421 GBP
Retailer 3£429 GBP
Retailer 5£465 GBP
Retailer 2£510 GBP
Retailer 7£545 GBP
Frank Darling£677 GBP

44 data points across 10 retailers

9 retailers£358 GBP to £677 GBP

A
Cheapest Retailer
-
£358 GBP
A
Retailer 2
-
£375 GBP
View
A
Retailer 3
-
£381 GBP
View
A
Retailer 4
-
£421 GBP
View
A
Retailer 5
-
£429 GBP
View
A
Retailer 6
-
£465 GBP
View
B+
Retailer 7
-
£510 GBP
View
B+
Retailer 8
-
£545 GBP
View
Most Expensive
B
Frank Darling
2682007HK · Nov 6
£677 GBP
$911 USD
View
8 more retailers have this diamond
Prices start from £358 GBPSave up to £319 GBP

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
£358 GBP