Heart|Natural|GIA

1.70ct J SI1 Heart Natural Diamond

ID • J/SI1 • GIA 1555112868

Certificate GIA 1555112868

Diamond specifications and retailer prices

From £3,667 GBP
$4,921 USD
As of November 2, 2026
Save £2,661 GBP (42%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £6,645 GBP at NZ Jewellers · As of September 30, 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 1555112868. Listed at 12 retailers as of November 1, 2026, with a 73% 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555112868
Dimensions8.30 × 6.99 × 5.09 mm
L/W Ratio1.19
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Natural
Top View
8.30 mm6.99 mm1.70 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1555112868
Side View
Table 56.0%CrownGirdlePavilionCulet: NoneDepth 61.3%

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: £4,494 GBP|Low: £3,362 GBP|High: £6,404 GBP|Avg: £4,443 GBP|+2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 6£3,667 GBP
Retailer 5£3,793 GBP
Retailer 2£3,877 GBP
Retailer 7£4,005 GBP
Retailer 1£4,494 GBP
Retailer 4£4,884 GBP
Retailer 3£6,329 GBP

44 data points across 7 retailers

12 retailers£3,667 GBP to £6,329 GBP

B+
Cheapest Retailer
-
£3,667 GBP
$4,921 USD
Final sale: no returns
B+
Retailer 2
-
£3,793 GBP
$5,090 USD
View
B+
Retailer 3
-
£3,877 GBP
View
Retailer 4
-
£3,973 GBP
$5,332 USD
View
Price last confirmed 26 days ago
Retailer 5
-
£3,973 GBP
$5,332 USD
View
Price last confirmed 26 days ago
Retailer 6
-
£3,973 GBP
$5,332 USD
View
Price last confirmed 33 days ago
Retailer 7
-
£4,005 GBP
A$8,269 AUD
View
Price last confirmed 24 days ago
B
Retailer 8
-
£4,494 GBP
€5,744 EUR
View
Retailer 9
-
£4,584 GBP
$6,152 USD
View
Price last confirmed 35 days ago
B
Retailer 10
-
£4,884 GBP
ZAR 105,874 ZAR
View
B
Retailer 11
-
£6,329 GBP
View
Most Expensive
NZ Jewellers
0e69b47c-47ab-4532-8b09-b66fb4f696aa · Sep 30
£6,645 GBP
$8,917 USD
View
Price last confirmed 33 days ago
11 more retailers have this diamond
Prices start from £3,667 GBPSave up to £2,661 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
£3,667 GBP