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Heart|Natural|GIA

1.00ct I SI2 Heart Natural Diamond

GD • I/SI2 • GIA 6435807278

Certificate GIA 6435807278

Diamond specifications and retailer prices

From £908 GBP
As of November 6, 2026
Save £2,075 GBP (70%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,983 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6435807278. Listed at 18 retailers as of November 5, 2026, with prices from £908 to £2,983, a £2,075 spread on the same certified stone. NZ Jewellers lists it at £2,983. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6435807278
Dimensions6.83 × 5.51 × 3.99 mm
L/W Ratio1.24
Top View
6.83 mm5.51 mm1.00 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6435807278
Side View
Table 71.0%CrownGirdle: VTK-XTKPavilionCulet: NoneDepth 58.4%

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 6
Current: £2,983 GBP|Low: £908 GBP|High: £2,983 GBP|Avg: £1,462 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 13£908 GBP
Retailer 8£958 GBP
Retailer 7£1,129 GBP
Retailer 4£1,207 GBP
Retailer 6£1,223 GBP
Retailer 15£1,223 GBP
Retailer 10£1,261 GBP
Retailer 2£1,263 GBP
Retailer 3£1,280 GBP
Retailer 14£1,325 GBP
Retailer 11£1,357 GBP
Retailer 5£1,411 GBP
Retailer 9£1,660 GBP
Retailer 12£2,137 GBP
NZ Jewellers£2,983 GBP

36 data points across 15 retailers

18 retailers£908 GBP to £2,983 GBP

B+
Cheapest Retailer
-
£908 GBP
A
Retailer 2
-
£958 GBP
View
B+
Retailer 3
-
£1,129 GBP
View
Final sale: no returns
B+
Retailer 4
-
£1,133 GBP
View
B+
Retailer 5
-
£1,207 GBP
View
Retailer 6
-
£1,223 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£1,223 GBP
View
B+
Retailer 8
-
£1,261 GBP
View
B+
Retailer 9
-
£1,263 GBP
View
B+
Retailer 10
-
£1,279 GBP
View
B+
Retailer 11
-
£1,280 GBP
View
B+
Retailer 12
-
£1,300 GBP
View
B+
Retailer 13
-
£1,325 GBP
View
B+
Retailer 14
-
£1,357 GBP
View
B+
Retailer 15
-
£1,411 GBP
View
B
Retailer 16
-
£1,660 GBP
View
B
Retailer 17
-
£2,137 GBP
View
Most Expensive
C
NZ Jewellers
1426f83e-0dc9-4c35-a7e8-399d9e5d8dbe · Nov 5
£2,983 GBP
$3,993 USD
View
17 more retailers have this diamond
Prices start from £908 GBPSave up to £2,075 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
1.00ct Heart
£908 GBP