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Heart|Natural|GIA

1.00ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 1545275861

Certificate GIA 1545275861

Diamond specifications and retailer prices

From £1,974 GBP
As of November 4, 2026
Save £2,053 GBP (51%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,027 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545275861. Listed at 12 retailers as of November 4, 2026, with prices from £1,974 to £4,027, a £2,053 spread on the same certified stone. NZ Jewellers lists it at £4,027. 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

1.00
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle40.98°
Pavilion angle39.99°
OriginNatural
Grading LabGIA
CertificateGIA 1545275861
Dimensions6.16 × 6.86 × 4.05 mm
L/W Ratio1.11
Girdle conditionVery Thick
Key to symbols
Feather, Pinpoint, Natural
Top View
6.16 mm6.86 mm1.00 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1545275861
Side View
Table 57.0%Crown 40.98°GirdlePavilion 39.99°Culet: NoneDepth 59.0%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: £4,027 GBP|Low: £1,955 GBP|High: £4,649 GBP|Avg: £2,607 GBP|-13.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 4£1,974 GBP
Retailer 10£2,069 GBP
Retailer 3£2,114 GBP
Retailer 12£2,133 GBP
Retailer 2£2,273 GBP
Retailer 9£2,312 GBP
Retailer 11£2,312 GBP
Retailer 5£2,391 GBP
Retailer 7£2,400 GBP
Retailer 8£2,667 GBP
Retailer 6£3,855 GBP
NZ Jewellers£4,027 GBP

35 data points across 12 retailers

12 retailers£1,974 GBP to £4,027 GBP

B+
Cheapest Retailer
-
£1,974 GBP
B+
Retailer 2
-
£2,069 GBP
View
Retailer 3
-
£2,114 GBP
View
Price last confirmed 8 days ago
B
Retailer 4
-
£2,133 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,273 GBP
View
B+
Retailer 6
-
£2,312 GBP
View
Retailer 7
-
£2,312 GBP
View
Price last confirmed 21 days ago
B
Retailer 8
-
£2,391 GBP
View
B
Retailer 9
-
£2,400 GBP
View
B
Retailer 10
-
£2,667 GBP
View
B
Retailer 11
-
£3,855 GBP
View
Most Expensive
B
NZ Jewellers
6d1470ad-0d25-47ea-96ba-712cf2e2b54d · Nov 5
£4,027 GBP
$5,390 USD
View
11 more retailers have this diamond
Prices start from £1,974 GBPSave up to £2,053 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+
1.00ct Heart
£1,974 GBP