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Marquise|Natural|GIA

1.29ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6562685051

Certificate GIA 6562685051

Diamond specifications and retailer prices

From £1,727 GBP
As of November 5, 2026
Save £1,778 GBP (51%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,505 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.29ct natural marquise diamond

This 1.29ct natural marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6562685051. Listed at 11 retailers as of November 5, 2026, with prices from £1,727 to £3,505, a £1,778 spread on the same certified stone. Wholesale Diamonds Direct lists it at £3,505. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.89°
Pavilion angle40.82°
OriginNatural
Grading LabGIA
CertificateGIA 6562685051
Dimensions10.85 × 5.74 × 3.65 mm
L/W Ratio1.89
Culet sizeNone
Top View
10.85 mm5.74 mm1.29 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6562685051
Side View
Table 58.0%Crown 38.89°Girdle: STK-THKPavilion 40.82°Culet: NDepth 63.6%

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 5
Current: £2,594 GBP|Low: £1,725 GBP|High: £3,505 GBP|Avg: £2,515 GBP|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
November 6, 2026
Retailer 3£1,727 GBP
Retailer 4£1,951 GBP
Retailer 2£2,078 GBP
Retailer 10£2,121 GBP
Retailer 5£2,137 GBP
Retailer 9£2,350 GBP
Retailer 6£2,516 GBP
Retailer 8£2,586 GBP
Retailer 1£2,594 GBP
Retailer 7£3,290 GBP
Wholesale Diamonds Direct£3,505 GBP

10 data points across 11 retailers

11 retailers£1,727 GBP to £3,505 GBP

A
Cheapest Retailer
-
£1,727 GBP
A
Retailer 2
-
£1,951 GBP
View
A
Retailer 3
-
£2,078 GBP
View
A
Retailer 4
-
£2,121 GBP
View
A
Retailer 5
-
£2,137 GBP
View
A
Retailer 6
-
£2,350 GBP
View
B+
Retailer 7
-
£2,516 GBP
View
B+
Retailer 8
-
£2,586 GBP
View
A
Retailer 9
-
£2,594 GBP
View
B
Retailer 10
-
£3,290 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
643534374 · Nov 6
£3,505 GBP
$4,691 USD
View
10 more retailers have this diamond
Prices start from £1,727 GBPSave up to £1,778 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 Marquise
£1,727 GBP