CaratHunter
Plans
Heart|Natural|GIA

1.21ct J VS1 Heart Natural Diamond

EX • J/VS1 • GIA 2125010349

Certificate GIA 2125010349

Diamond specifications and retailer prices

From £3,594 GBP
$4,822 USD
As of October 31, 2026
Save £1,925 GBP (35%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £6,617 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2125010349. Listed at 10 retailers as of October 31, 2026, with a 54% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
J
Colour
VS1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2125010349
Dimensions6.82 × 5.54 × 3.83 mm
L/W Ratio1.23
Culet sizeNone
Top View
6.82 mm5.54 mm1.21 ctJ / VS1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2125010349
Side View
Table 63.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 69.1%

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: Oct 31
Current: £6,617 GBP|Low: £4,145 GBP|High: £6,697 GBP|Avg: £5,138 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 5£4,145 GBP
Retailer 6£4,440 GBP
Retailer 3£4,826 GBP
Retailer 2£4,906 GBP
Retailer 4£5,518 GBP
MOH London£6,617 GBP

43 data points across 6 retailers

10 retailers£3,594 GBP to £5,518 GBP

B
Cheapest Retailer
-
£3,594 GBP
$4,822 USD
B
Retailer 2
-
£3,917 GBP
$5,256 USD
View
B
Retailer 3
-
£4,145 GBP
$5,563 USD
View
Final sale: no returns
B
Retailer 4
-
£4,184 GBP
$5,615 USD
View
Retailer 5
-
£4,440 GBP
A$9,167 AUD
View
Price last confirmed 23 days ago
B
Retailer 6
-
£4,608 GBP
$6,183 USD
View
B
Retailer 7
-
£4,826 GBP
View
B
Retailer 8
-
£4,906 GBP
€6,270 EUR
View
B
Retailer 9
-
£5,518 GBP
ZAR 119,631 ZAR
View
Most Expensive
MOH London
14171E952 · Nov 1
£6,617 GBP
View
Price under review
9 more retailers have this diamond
Prices start from £3,594 GBPSave up to £1,925 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
1.21ct Heart
£3,594 GBP