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Round|Natural|GIA

1.27ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6541958660

Certificate GIA 6541958660

Diamond specifications and retailer prices

From £1,963 GBP
$2,634 USD
As of November 2, 2026
Save £1,784 GBP (48%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,945 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.27ct natural round diamond

This 1.27ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6541958660. Listed at 9 retailers as of October 29, 2026, with a 91% 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

1.27
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6541958660
Dimensions6.85 × 6.90 × 4.34 mm
L/W Ratio1.01
Star length50%
Top View
6.85 mm6.90 mm1.27 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541958660
Side View
Table 57.0%Crown 36.5°GirdlePavilion 41°Culet: NoneDepth 63.2%

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 2
Current: £2,260 GBP|Low: £1,916 GBP|High: £3,827 GBP|Avg: £2,522 GBP|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 4£1,963 GBP
Retailer 1£2,260 GBP
Retailer 6£2,264 GBP
Retailer 5£2,265 GBP
Retailer 2£2,377 GBP
Retailer 7£2,694 GBP
Retailer 3£3,747 GBP

25 data points across 7 retailers

9 retailers£1,963 GBP to £3,747 GBP

A
Cheapest Retailer
-
£1,963 GBP
$2,634 USD
Final sale: no returns
A
Retailer 2
-
£2,260 GBP
View
Retailer 3
-
£2,264 GBP
$3,038 USD
View
Price last confirmed 34 days ago
Retailer 4
-
£2,265 GBP
$3,040 USD
View
Price last confirmed 18 days ago
Retailer 5
-
£2,351 GBP
$3,155 USD
View
Price last confirmed 34 days ago
A
Retailer 6
-
£2,377 GBP
€3,038 EUR
View
Retailer 7
-
£2,613 GBP
$3,506 USD
View
Price last confirmed 33 days ago
B+
Retailer 8
-
£3,747 GBP
View
Most Expensive
NZ Jewellers
9d33eca8-ac60-443b-94f7-be878d60f780 · Sep 28
£3,945 GBP
$5,294 USD
View
Price last confirmed 35 days ago
8 more retailers have this diamond
Prices start from £1,963 GBPSave up to £1,784 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
1.27ct Round
£1,963 GBP