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Emerald|Natural|GIA

0.51ct F SI1 Emerald Natural Diamond

EX • F/SI1 • GIA 2548820291

Certificate GIA 2548820291

Diamond specifications and retailer prices

From £315 GBP
As of November 4, 2026
Save £731 GBP (70%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,422 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 2548820291. Listed at 16 retailers as of November 4, 2026, with a 232% 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
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2548820291
Dimensions5.36 × 3.74 × 2.58 mm
L/W Ratio1.43
Top View
5.36 mm3.74 mm0.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2548820291
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.0%

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 4
Current: £332 GBP|Low: £315 GBP|High: £1,060 GBP|Avg: £603 GBP|-2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7£315 GBP
Retailer 1£332 GBP
Retailer 3£548 GBP
Retailer 6£594 GBP
Retailer 2£665 GBP
Retailer 8£681 GBP
Retailer 5£700 GBP
Retailer 4£1,046 GBP

36 data points across 8 retailers

16 retailers£315 GBP to £1,046 GBP

A
Cheapest Retailer
-
£315 GBP
Final sale: no returns
A
Retailer 2
-
£332 GBP
View
B+
Retailer 3
-
£429 GBP
View
B+
Retailer 4
-
£453 GBP
View
B+
Retailer 5
-
£488 GBP
View
Retailer 6
-
£488 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£523 GBP
View
B+
Retailer 8
-
£548 GBP
View
B+
Retailer 9
-
£551 GBP
View
Retailer 10
-
£586 GBP
View
Price last confirmed 41 days ago
B+
Retailer 11
-
£594 GBP
View
B
Retailer 12
-
£665 GBP
View
Retailer 13
-
£681 GBP
View
Price last confirmed 33 days ago
B
Retailer 14
-
£700 GBP
View
B
Retailer 15
-
£1,046 GBP
View
Most Expensive
NZ Jewellers
01ec37c2-3384-4ca3-8c6e-77a1e4fc563d · Nov 5
£1,422 GBP
$1,914 USD
View
Price under review
15 more retailers have this diamond
Prices start from £315 GBPSave up to £731 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
£315 GBP