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Marquise|Natural|GIA

0.51ct H I1 Marquise Natural Diamond

H/I1 • GIA 6521241419

Certificate GIA 6521241419

Diamond specifications and retailer prices

From £296 GBP
₹37,783 INR
As of November 2, 2026
Save £208 GBP (41%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £504 GBP at B2C Jewels · As of November 2, 2026
View at B2C Jewels

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded H colour (near-colourless) and I1 clarity (included) and certified by GIA 6521241419. Listed at 2 retailers as of November 2, 2026, with prices from £296 to £504, a £208 spread on the same certified stone. B2C Jewels lists it at £504. 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
I1
Clarity
-
Cut

Specifications

Cut
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6521241419
Dimensions8.24 × 3.88 × 2.76 mm
L/W Ratio2.12
Top View
8.24 mm3.88 mm0.51 ctH / I1
OriginNatural
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6521241419
Side View
Table 63.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 71.0%

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 2
Current: £504 GBP|Low: £295 GBP|High: £504 GBP|Avg: £401 GBP|+1.5%
B2C Jewels
Retailer 2
November 2, 2026
Retailer 2£296 GBP
B2C Jewels£504 GBP

41 data points across 2 retailers

2 retailers£296 GBP to £504 GBP

B+
Cheapest Retailer
-
£296 GBP
₹37,783 INR
Most Expensive
B
B2C Jewels
28954034 · Nov 2
£504 GBP
$676 USD
View
1 more retailer has this diamond
Prices start from £296 GBPSave up to £208 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 Marquise
£296 GBP