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Emerald|Natural|GIA

0.51ct H SI2 Emerald Natural Diamond

GD • H/SI2 • GIA 6451960939

Certificate GIA 6451960939

Diamond specifications and retailer prices

From £672 GBP
As of November 1, 2026
Save £209 GBP (24%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,060 GBP at Yorxs · As of November 6, 2026
View at Yorxs

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 6451960939. Listed at 10 retailers as of November 1, 2026, with a 31% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6451960939
Dimensions5.65 × 3.70 × 2.50 mm
L/W Ratio1.53
Top View
5.65 mm3.70 mm0.51 ctH / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6451960939
Side View
Table 64.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £881 GBP|Low: £672 GBP|High: £1,852 GBP|Avg: £956 GBP|+5.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Yorxs
November 6, 2026
Retailer 3£672 GBP
Retailer 6£688 GBP
Retailer 8£688 GBP
Retailer 4£714 GBP
Retailer 9£764 GBP
Retailer 7£794 GBP
Retailer 1£881 GBP
Yorxs£1,060 GBP
Retailer 2£1,389 GBP
Retailer 5£1,852 GBP

44 data points across 10 retailers

10 retailers£672 GBP to £881 GBP

B
Cheapest Retailer
-
£672 GBP
Retailer 2
-
£688 GBP
View
Price last confirmed 8 days ago
B
Retailer 3
-
£688 GBP
View
C
Retailer 4
-
£714 GBP
View
C
Retailer 5
-
£794 GBP
View
C
Retailer 6
-
£873 GBP
View
C
Retailer 7
-
£881 GBP
View
Most Expensive
Yorxs
99D58E086 · Nov 6
£1,060 GBP
€1,359 EUR
View
Price under review
7 more retailers have this diamond
Prices start from £672 GBPSave up to £209 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
£672 GBP