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Radiant|Natural|GIA

1.29ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 1383932756

Certificate GIA 1383932756

Diamond specifications and retailer prices

From £2,477 GBP
As of November 6, 2026
Save £1,242 GBP (33%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £3,720 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 1.29ct natural radiant diamond

This 1.29ct natural radiant 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 1383932756. Listed at 4 retailers as of November 6, 2026, with prices from £2,477 to £3,720, a £1,242 spread on the same certified stone. 77 Diamonds lists it at £3,720. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1383932756
Dimensions6.69 × 5.42 × 3.80 mm
L/W Ratio1.23
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.69 mm5.42 mm1.29 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1383932756
Side View
Table 66.0%CrownGirdle: VTK-NULPavilionCuletDepth 70.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,720 GBP|Low: £2,477 GBP|High: £3,765 GBP|Avg: £2,913 GBP|+1.1%
77 Diamonds
Retailer 2
Retailer 3
November 6, 2026
Retailer 3£2,477 GBP
Retailer 2£2,518 GBP
77 Diamonds£3,720 GBP

38 data points across 3 retailers

4 retailers£2,477 GBP to £3,720 GBP

B+
Cheapest Retailer
-
£2,477 GBP
B+
Retailer 2
-
£2,518 GBP
View
B+
Retailer 3
-
£2,715 GBP
View
Most Expensive
B
77 Diamonds
RADZNKVWCTHE · Nov 6
£3,720 GBP
View
3 more retailers have this diamond
Prices start from £2,477 GBPSave up to £1,242 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.

B+
1.29ct Radiant
£2,477 GBP