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Marquise|Natural|GIA

1.25ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 6542426736

Certificate GIA 6542426736

Diamond specifications and retailer prices

From £2,349 GBP
As of November 4, 2026
Save £1,102 GBP (32%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £3,451 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 1.25ct natural marquise diamond

This 1.25ct natural marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542426736. Listed at 4 retailers as of November 4, 2026, with prices from £2,349 to £3,451, a £1,102 spread on the same certified stone. 77 Diamonds lists it at £3,451. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542426736
Dimensions11.20 × 5.64 × 3.48 mm
L/W Ratio1.99
Top View
11.20 mm5.64 mm1.25 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542426736
Side View
Table 58.0%CrownGirdle: ThickPavilionCuletDepth 61.7%

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: £3,451 GBP|Low: £2,349 GBP|High: £3,519 GBP|Avg: £2,786 GBP|+0.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4£2,349 GBP
Retailer 3£2,356 GBP
Retailer 2£2,956 GBP
77 Diamonds£3,451 GBP

35 data points across 4 retailers

4 retailers£2,349 GBP to £3,451 GBP

A
Cheapest Retailer
-
£2,349 GBP
A
Retailer 2
-
£2,356 GBP
View
B+
Retailer 3
-
£2,956 GBP
View
Most Expensive
B
77 Diamonds
MQMBTTVJYTTD · Nov 6
£3,451 GBP
View
3 more retailers have this diamond
Prices start from £2,349 GBPSave up to £1,102 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
1.25ct Marquise
£2,349 GBP