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Round|Natural|GIA

1.25ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6475249857

Certificate GIA 6475249857

Diamond specifications and retailer prices

From £3,153 GBP
As of November 6, 2026
Save £460 GBP (13%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £3,613 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 1.25ct natural round diamond

This 1.25ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6475249857. Listed at 4 retailers as of November 6, 2026, with a relatively tight 15% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.25
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6475249857
Dimensions6.86 × 6.91 × 4.29 mm
L/W Ratio1.01
Top View
6.86 mm6.91 mm1.25 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6475249857
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: £3,613 GBP|Low: £3,153 GBP|High: £3,672 GBP|Avg: £3,398 GBP|+0.8%
77 Diamonds
Retailer 2
November 6, 2026
Retailer 2£3,153 GBP
77 Diamonds£3,613 GBP

36 data points across 2 retailers

4 retailers£3,153 GBP to £3,613 GBP

B+
Cheapest Retailer
-
£3,153 GBP
Retailer 2
-
£3,153 GBP
View
Price last confirmed 28 days ago
Retailer 3
-
£3,153 GBP
View
Price last confirmed 16 days ago
Most Expensive
B
77 Diamonds
RBMB2EAQURF8 · Nov 6
£3,613 GBP
View
3 more retailers have this diamond
Prices start from £3,153 GBPSave up to £460 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+
1.25ct Round
£3,153 GBP