CaratHunter
Plans
Emerald|Natural|GIA

0.51ct F SI1 Emerald Natural Diamond

EX • F/SI1 • GIA 6565371108

Certificate GIA 6565371108

Diamond specifications and retailer prices

From £333 GBP
As of November 6, 2026
Save £811 GBP (71%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,331 GBP at Taylor and Hart · As of November 1, 2026
View at Taylor and Hart

About this 0.51ct natural emerald diamond

This 0.51ct natural emerald sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565371108. Listed at 13 retailers as of November 3, 2026, with a 244% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6565371108
Dimensions5.38 × 3.85 × 2.57 mm
L/W Ratio1.40
Culet sizeNone
Top View
5.38 mm3.85 mm0.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6565371108
Side View
Table 61.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 66.8%

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: Nov 6
Current: £333 GBP|Low: £333 GBP|High: £1,656 GBP|Avg: £725 GBP|-2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
November 6, 2026
Retailer 1£333 GBP
Retailer 4£424 GBP
Retailer 5£607 GBP
Retailer 7£667 GBP
Retailer 10£941 GBP
Retailer 8£990 GBP
Retailer 12£1,073 GBP
Retailer 2£1,102 GBP
Retailer 11£1,144 GBP
Retailer 3£1,238 GBP
Retailer 9£1,317 GBP
Taylor and Hart£1,331 GBP
Retailer 6£1,656 GBP

38 data points across 13 retailers

13 retailers£333 GBP to £1,144 GBP

A
Cheapest Retailer
-
£333 GBP
B+
Retailer 2
-
£424 GBP
View
B+
Retailer 3
-
£607 GBP
View
B
Retailer 4
-
£667 GBP
View
B
Retailer 5
-
£941 GBP
View
B
Retailer 6
-
£990 GBP
View
Final sale: no returns
B
Retailer 7
-
£1,073 GBP
View
B
Retailer 8
-
£1,102 GBP
View
B
Retailer 9
-
£1,144 GBP
View
Retailer 10
-
£1,238 GBP
View
Price under review
Retailer 11
-
£1,317 GBP
View
Price under review
Most Expensive
Taylor and Hart
ETM3PHX · Nov 1
£1,331 GBP
$1,791 USD
View
Price under review
11 more retailers have this diamond
Prices start from £333 GBPSave up to £811 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
£333 GBP