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Heart|Natural|GIA

1.70ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 1529474214

Certificate GIA 1529474214

Diamond specifications and retailer prices

From £3,906 GBP
$5,242 USD
As of November 1, 2026
Save £2,894 GBP (43%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £7,721 GBP at NZ Jewellers · As of October 6, 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 1529474214. Listed at 15 retailers as of November 1, 2026, with a 74% 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
Crown angle39.1°
Pavilion angle41.28°
OriginNatural
Grading LabGIA
CertificateGIA 1529474214
Dimensions6.96 × 8.05 × 4.93 mm
L/W Ratio1.16
Culet sizePointed
Key to symbols
Twinning Wisp
Top View
6.96 mm8.05 mm1.70 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1529474214
Side View
Table 59.0%Crown 39.1°Girdle: VTK-VTKPavilion 41.28°Culet: NoneDepth 61.2%

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 1
Current: £7,721 GBP|Low: £3,906 GBP|High: £7,721 GBP|Avg: £4,984 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
November 2, 2026
Retailer 4£3,906 GBP
Retailer 3£4,026 GBP
Retailer 9£4,261 GBP
Retailer 11£4,296 GBP
Retailer 6£4,429 GBP
Retailer 2£4,441 GBP
Retailer 12£4,616 GBP
Retailer 10£4,731 GBP
Retailer 5£4,770 GBP
Retailer 13£5,327 GBP
Retailer 8£5,672 GBP
Retailer 7£6,801 GBP
NZ Jewellers£7,721 GBP

38 data points across 13 retailers

15 retailers£3,906 GBP to £6,801 GBP

B+
Cheapest Retailer
-
£3,906 GBP
$5,242 USD
B+
Retailer 2
-
£4,026 GBP
$5,403 USD
View
B+
Retailer 3
-
£4,261 GBP
$5,718 USD
View
Final sale: no returns
B+
Retailer 4
-
£4,296 GBP
$5,765 USD
View
B+
Retailer 5
-
£4,429 GBP
View
B+
Retailer 6
-
£4,441 GBP
View
Retailer 7
-
£4,616 GBP
$6,195 USD
View
Price last confirmed 26 days ago
Retailer 8
-
£4,616 GBP
$6,195 USD
View
Price last confirmed 26 days ago
B
Retailer 9
-
£4,731 GBP
$6,349 USD
View
Retailer 10
-
£4,770 GBP
A$9,848 AUD
View
Price last confirmed 30 days ago
Retailer 11
-
£4,800 GBP
$6,441 USD
View
Price last confirmed 33 days ago
Retailer 12
-
£5,327 GBP
$7,148 USD
View
Price last confirmed 25 days ago
B
Retailer 13
-
£5,672 GBP
ZAR 122,959 ZAR
View
B
Retailer 14
-
£6,801 GBP
View
Most Expensive
NZ Jewellers
49f3b747-36dc-4e22-8659-c3a39488ed05 · Oct 6
£7,721 GBP
$10,361 USD
View
Price last confirmed 27 days ago
14 more retailers have this diamond
Prices start from £3,906 GBPSave up to £2,894 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
£3,906 GBP