CaratHunter
Plans
Heart|Natural|GIA

1.29ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 2135717114

Certificate GIA 2135717114

Diamond specifications and retailer prices

From £3,316 GBP
As of November 6, 2026
Save £1,898 GBP (36%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £5,215 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.29ct natural heart diamond

This 1.29ct natural heart 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 2135717114. Listed at 5 retailers as of November 2, 2026, with prices from £3,316 to £5,215, a £1,898 spread on the same certified stone. MOH London lists it at £5,215. 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
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2135717114
Dimensions7.66 × 7.82 × 3.60 mm
L/W Ratio1.02
Culet sizeMedium
Top View
7.66 mm7.82 mm1.29 ctJ / SI1
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 2135717114
Side View
Table 62.0%CrownGirdle: VTN-THKPavilionCulet: MediumDepth 46.1%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £5,215 GBP|Low: £3,258 GBP|High: £5,277 GBP|Avg: £3,938 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 3£3,316 GBP
Retailer 4£3,492 GBP
Retailer 2£3,684 GBP
MOH London£5,215 GBP

45 data points across 4 retailers

5 retailers£3,316 GBP to £5,215 GBP

B
Cheapest Retailer
-
£3,316 GBP
Retailer 2
-
£3,492 GBP
View
Price last confirmed 29 days ago
B
Retailer 3
-
£3,684 GBP
View
Retailer 4
-
£3,703 GBP
View
Price last confirmed 15 days ago
Most Expensive
C
MOH London
7716E9087 · Nov 2
£5,215 GBP
View
4 more retailers have this diamond
Prices start from £3,316 GBPSave up to £1,898 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 Heart
£3,316 GBP