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Heart|Natural|GIA

1.70ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 7548576551

Certificate GIA 7548576551

Diamond specifications and retailer prices

From £3,195 GBP
HK$33,500 HKD
As of November 2, 2026
Save £2,009 GBP (39%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £7,082 GBP at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.7ct natural heart diamond

This 1.7ct natural heart sits in the one-and-a-half to two carat band, graded J 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 7548576551. Listed at 20 retailers as of October 31, 2026, with a 63% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.70
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7548576551
Dimensions7.11 × 8.08 × 4.98 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Feather, Crystal, Needle
Top View
7.11 mm8.08 mm1.70 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7548576551
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.7%

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 2
Current: £7,082 GBP|Low: £3,176 GBP|High: £7,082 GBP|Avg: £4,454 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
Retailer 16
Retailer 17
November 2, 2026
Retailer 10£3,195 GBP
Retailer 2£3,391 GBP
Retailer 4£3,773 GBP
Retailer 13£3,887 GBP
Retailer 11£4,052 GBP
Retailer 7£4,080 GBP
Retailer 14£4,109 GBP
Retailer 8£4,210 GBP
Retailer 3£4,234 GBP
Retailer 6£4,234 GBP
Retailer 9£4,234 GBP
Retailer 17£4,257 GBP
Retailer 12£4,327 GBP
Retailer 5£4,885 GBP
Retailer 15£5,204 GBP
Retailer 16£6,753 GBP
NZ Jewellers£7,082 GBP

26 data points across 17 retailers

20 retailers£3,195 GBP to £5,204 GBP

B+
Cheapest Retailer
-
£3,195 GBP
HK$33,500 HKD
B+
Retailer 2
-
£3,391 GBP
₹433,359 INR
View
B+
Retailer 3
-
£3,773 GBP
SGD 6,842 SGD
View
B+
Retailer 4
-
£3,887 GBP
$5,216 USD
View
Final sale: no returns
B
Retailer 5
-
£3,923 GBP
$5,264 USD
View
B
Retailer 6
-
£3,923 GBP
$5,265 USD
View
B+
Retailer 7
-
£4,052 GBP
View
Retailer 8
-
£4,080 GBP
SGD 7,399 SGD
View
Price last confirmed 19 days ago
B+
Retailer 9
-
£4,109 GBP
View
B+
Retailer 10
-
£4,111 GBP
A$8,488 AUD
View
B
Retailer 11
-
£4,210 GBP
$5,650 USD
View
Retailer 12
-
£4,234 GBP
$5,682 USD
View
Price last confirmed 18 days ago
Retailer 13
-
£4,234 GBP
$5,682 USD
View
Price last confirmed 15 days ago
Retailer 14
-
£4,234 GBP
$5,682 USD
View
Price last confirmed 17 days ago
Retailer 15
-
£4,257 GBP
A$8,788 AUD
View
Price last confirmed 16 days ago
B
Retailer 16
-
£4,327 GBP
$5,807 USD
View
Retailer 17
-
£4,885 GBP
$6,556 USD
View
Price last confirmed 15 days ago
B
Retailer 18
-
£5,204 GBP
ZAR 112,829 ZAR
View
Retailer 19
-
£6,753 GBP
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
2342f5bb-d5f6-4248-bb12-cf09a4a2d8d1 · Oct 18
£7,082 GBP
$9,503 USD
View
Price last confirmed 16 days ago
19 more retailers have this diamond
Prices start from £3,195 GBPSave up to £2,009 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+
1.70ct Heart
£3,195 GBP