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Heart|Natural|GIA

1.00ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 2427733321

Certificate GIA 2427733321

Diamond specifications and retailer prices

From £987 GBP
₹125,919 INR
As of November 1, 2026
Save £2,605 GBP (73%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,592 GBP at Adiamor · As of November 1, 2026
View at Adiamor

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded H 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 2427733321. Listed at 18 retailers as of November 1, 2026, with prices from £987 to £3,592, a £2,605 spread on the same certified stone. Adiamor lists it at £3,592. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2427733321
Dimensions6.24 × 6.74 × 3.72 mm
L/W Ratio1.08
Top View
6.24 mm6.74 mm1.00 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2427733321
Side View
Table 59.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 55.3%

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 1
Current: £1,904 GBP|Low: £984 GBP|High: £2,473 GBP|Avg: £1,570 GBP|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 5£987 GBP
Retailer 7£1,003 GBP
Retailer 10£1,263 GBP
Retailer 11£1,287 GBP
Retailer 9£1,433 GBP
Retailer 3£1,459 GBP
Retailer 4£1,529 GBP
Retailer 8£1,714 GBP
Retailer 2£1,820 GBP
Retailer 1£1,904 GBP
Retailer 6£2,444 GBP

34 data points across 11 retailers

18 retailers£987 GBP to £3,592 GBP

A
Cheapest Retailer
-
£987 GBP
₹125,919 INR
A
Retailer 2
-
£1,003 GBP
HK$10,500 HKD
View
B+
Retailer 3
-
£1,262 GBP
$1,691 USD
View
A
Retailer 4
-
£1,263 GBP
$1,692 USD
View
B+
Retailer 5
-
£1,287 GBP
$1,724 USD
View
Final sale: no returns
B+
Retailer 6
-
£1,395 GBP
$1,869 USD
View
B+
Retailer 7
-
£1,395 GBP
$1,869 USD
View
B+
Retailer 8
-
£1,396 GBP
SGD 2,528 SGD
View
B+
Retailer 9
-
£1,433 GBP
$1,920 USD
View
B+
Retailer 10
-
£1,459 GBP
$1,955 USD
View
B+
Retailer 11
-
£1,529 GBP
View
B+
Retailer 12
-
£1,609 GBP
$2,156 USD
View
B+
Retailer 13
-
£1,714 GBP
ZAR 37,104 ZAR
View
Retailer 14
-
£1,820 GBP
A$3,751 AUD
View
Price last confirmed 27 days ago
B+
Retailer 15
-
£1,904 GBP
€2,430 EUR
View
B
Retailer 16
-
£2,444 GBP
View
B
Retailer 17
-
£3,402 GBP
$4,558 USD
View
Most Expensive
B
Adiamor
D-51261821 · Nov 1
£3,592 GBP
$4,813 USD
View
17 more retailers have this diamond
Prices start from £987 GBPSave up to £2,605 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
£987 GBP