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Heart|Natural|GIA

1.00ct D SI1 Heart Natural Diamond

VG • D/SI1 • GIA 2556996492

Certificate GIA 2556996492

Diamond specifications and retailer prices

From £1,389 GBP
As of November 2, 2026
Save £1,385 GBP (50%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,411 GBP at NZ Jewellers · As of September 30, 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2556996492. Listed at 17 retailers as of November 1, 2026, with a 100% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
Crown angle38.14°
Pavilion angle40.22°
OriginNatural
Grading LabGIA
CertificateGIA 2556996492
Dimensions6.86 × 6.07 × 4.01 mm
L/W Ratio1.13
Culet sizeNone
Key to symbols
Crystal, Twinning Wisp, Cloud, Feather, Needle, Indented Natural
Top View
6.86 mm6.07 mm1.00 ctD / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2556996492
Side View
Table 59.0%Crown 38.14°Girdle: Extremely ThickPavilion 40.22°Culet: NDepth 58.5%

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 2
Current: £2,155 GBP|Low: £1,172 GBP|High: £2,893 GBP|Avg: £1,920 GBP|+8.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 8£1,389 GBP
Retailer 6£1,431 GBP
Retailer 9£1,461 GBP
Retailer 5£1,599 GBP
Retailer 2£1,632 GBP
Retailer 3£1,737 GBP
Retailer 7£1,946 GBP
Retailer 10£2,006 GBP
Retailer 1£2,155 GBP
Retailer 4£2,774 GBP

43 data points across 10 retailers

17 retailers£1,389 GBP to £2,774 GBP

A
Cheapest Retailer
-
£1,389 GBP
A
Retailer 2
-
£1,431 GBP
View
B+
Retailer 3
-
£1,461 GBP
View
Final sale: no returns
B+
Retailer 4
-
£1,599 GBP
View
B+
Retailer 5
-
£1,616 GBP
View
Retailer 6
-
£1,632 GBP
View
Price last confirmed 53 days ago
Retailer 7
-
£1,632 GBP
View
Price last confirmed 36 days ago
Retailer 8
-
£1,632 GBP
View
Price last confirmed 21 days ago
Retailer 9
-
£1,707 GBP
View
Price last confirmed 36 days ago
B+
Retailer 10
-
£1,737 GBP
View
Retailer 11
-
£1,883 GBP
View
Price last confirmed 52 days ago
Retailer 12
-
£1,883 GBP
View
Price last confirmed 38 days ago
B+
Retailer 13
-
£1,946 GBP
View
Retailer 14
-
£2,006 GBP
View
Price last confirmed 31 days ago
B
Retailer 15
-
£2,155 GBP
View
B
Retailer 16
-
£2,774 GBP
View
Most Expensive
NZ Jewellers
ddc43a4b-ed04-4f61-a98b-a85682c73db4 · Sep 30
£3,411 GBP
$4,566 USD
View
Price last confirmed 37 days ago
16 more retailers have this diamond
Prices start from £1,389 GBPSave up to £1,385 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
£1,389 GBP