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Emerald|Natural|GIA

0.51ct H SI2 Emerald Natural Diamond

GD • H/SI2 • GIA 6555560373

Certificate GIA 6555560373

Diamond specifications and retailer prices

From £267 GBP
As of November 4, 2026
Save £75 GBP (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £342 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6555560373. Listed at 4 retailers as of November 4, 2026, with prices from £267 to £342, a £75 spread on the same certified stone. 77 Diamonds lists it at £342. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
H
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555560373
Dimensions5.22 × 3.78 × 2.65 mm
L/W Ratio1.38
Culet sizeNone
Key to symbols
Crystal, Feather, Knot
Top View
5.22 mm3.78 mm0.51 ctH / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6555560373
Side View
Table 69.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.9%

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: Nov 4
Current: £342 GBP|Low: £237 GBP|High: £346 GBP|Avg: £294 GBP|+0.7%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4£267 GBP
Retailer 2£279 GBP
Retailer 3£298 GBP
77 Diamonds£342 GBP

42 data points across 4 retailers

4 retailers£267 GBP to £342 GBP

B+
Cheapest Retailer
-
£267 GBP
B+
Retailer 2
-
£279 GBP
View
Final sale: no returns
B+
Retailer 3
-
£298 GBP
View
Most Expensive
B+
77 Diamonds
EMCPAMUCEPXX · Nov 6
£342 GBP
View
3 more retailers have this diamond
Prices start from £267 GBPSave up to £75 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.

B+
0.51ct Emerald
£267 GBP