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Round|Natural|GIA

1.29ct M SI1 Round Natural Diamond

ID • M/SI1 • GIA 2566759329

Certificate GIA 2566759329

Diamond specifications and retailer prices

From £1,140 GBP
As of November 4, 2026
Save £688 GBP (38%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,828 GBP at Wholesale Diamonds Direct · As of November 4, 2026
View at Wholesale Diamonds Direct

About this 1.29ct natural round diamond

This 1.29ct 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 2566759329. Listed at 5 retailers as of November 4, 2026, with prices from £1,140 to £1,828, a £688 spread on the same certified stone. Wholesale Diamonds Direct lists it at £1,828. 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

1.29
Carat
M
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2566759329
Dimensions6.95 × 6.99 × 4.28 mm
L/W Ratio1.01
Top View
6.95 mm6.99 mm1.29 ctM / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2566759329
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.2%

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 4
Current: £1,406 GBP|Low: £1,140 GBP|High: £1,828 GBP|Avg: £1,458 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Wholesale Diamonds Direct
November 6, 2026
Retailer 3£1,140 GBP
Retailer 1£1,406 GBP
Retailer 4£1,503 GBP
Retailer 2£1,566 GBP
Wholesale Diamonds Direct£1,828 GBP

6 data points across 5 retailers

5 retailers£1,140 GBP to £1,828 GBP

A
Cheapest Retailer
-
£1,140 GBP
B+
Retailer 2
-
£1,406 GBP
View
B+
Retailer 3
-
£1,503 GBP
View
B+
Retailer 4
-
£1,566 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
668784614 · Nov 4
£1,828 GBP
$2,461 USD
View
4 more retailers have this diamond
Prices start from £1,140 GBPSave up to £688 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
1.29ct Round
£1,140 GBP