Round|Natural|GIA

1.27ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2566008696

Certificate GIA 2566008696

Diamond specifications and retailer prices

From £986 GBP
As of November 4, 2026
Save £151 GBP (13%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,574 GBP at NZ Jewellers · As of September 27, 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566008696. Listed at 12 retailers as of November 4, 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

1.27
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle31.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2566008696
Dimensions7.06 × 7.09 × 4.25 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.06 mm7.09 mm1.27 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2566008696
Side View
Table 59.0%Crown 31.5°Girdle: MED-MEDPavilion 41.6°Culet: NoneDepth 60.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,137 GBP|Low: £702 GBP|High: £1,342 GBP|Avg: £1,032 GBP|-3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 25, 2026
Retailer 3£702 GBP
Retailer 6£938 GBP
Retailer 7£938 GBP
Retailer 2£986 GBP
Retailer 5£1,082 GBP
Retailer 1£1,137 GBP
Retailer 4£1,146 GBP
Retailer 8£1,227 GBP

21 data points across 8 retailers

12 retailers£986 GBP to £1,137 GBP

Retailer 1
-
£919 GBP
Price last confirmed 30 days ago
Retailer 2
-
£938 GBP
View
Price last confirmed 34 days ago
A
Retailer 3
-
£986 GBP
View
Retailer 4
-
£1,040 GBP
View
Price last confirmed 38 days ago
Retailer 5
-
£1,055 GBP
View
Price last confirmed 39 days ago
Retailer 6
-
£1,060 GBP
View
Price last confirmed 30 days ago
Retailer 7
-
£1,082 GBP
View
Price last confirmed 33 days ago
A
Retailer 8
-
£1,137 GBP
View
Retailer 9
-
£1,146 GBP
View
Price last confirmed 33 days ago
Retailer 10
-
£1,218 GBP
View
Price last confirmed 39 days ago
Retailer 11
-
£2,286 GBP
View
Price last confirmed 31 days ago
Most Expensive
NZ Jewellers
18b69c06-e43a-48f3-92ee-903b779dbd91 · Sep 27
£2,574 GBP
$3,465 USD
View
Price last confirmed 40 days ago
11 more retailers have this diamond
Prices start from £986 GBPSave up to £151 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
£986 GBP