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Round|Natural|GIA

1.27ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 5231961820

Certificate GIA 5231961820

Diamond specifications and retailer prices

From £3,093 GBP
As of October 31, 2026
Save £2,002 GBP (39%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £5,096 GBP at MOH London · As of October 26, 2026
View at MOH London

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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5231961820. Listed at 5 retailers as of October 26, 2026, with prices from £3,093 to £5,096, a £2,002 spread on the same certified stone. MOH London lists it at £5,096. 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5231961820
Dimensions6.93 × 6.98 × 4.27 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather
Top View
6.93 mm6.98 mm1.27 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231961820
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.4%

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: Oct 31
Current: £5,096 GBP|Low: £2,199 GBP|High: £5,150 GBP|Avg: £3,150 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 4£2,290 GBP
Retailer 5£2,420 GBP
Retailer 2£3,093 GBP
Retailer 3£3,437 GBP
MOH London£5,096 GBP

43 data points across 5 retailers

5 retailers£3,093 GBP to £5,096 GBP

Retailer 1
-
£2,290 GBP
₹292,240 INR
Price last confirmed 8 days ago
Retailer 2
-
£2,499 GBP
$3,349 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
£3,093 GBP
View
A
Retailer 4
-
£3,437 GBP
€4,386 EUR
View
Most Expensive
B+
MOH London
91FC820EC · Oct 26
£5,096 GBP
View
4 more retailers have this diamond
Prices start from £3,093 GBPSave up to £2,002 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
£3,093 GBP