CaratHunter
Plans
Heart|Natural|GIA

1.70ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 6532840120

Certificate GIA 6532840120

Diamond specifications and retailer prices

From £1,989 GBP
As of November 6, 2026
Save £2,324 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,581 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6532840120. Listed at 14 retailers as of November 4, 2026, with a 117% 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6532840120
Dimensions7.69 × 8.35 × 4.81 mm
L/W Ratio1.09
Top View
7.69 mm8.35 mm1.70 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6532840120
Side View
Table 64.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 57.7%

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 6
Current: £4,581 GBP|Low: £1,989 GBP|High: £4,581 GBP|Avg: £3,000 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£1,989 GBP
Retailer 2£2,105 GBP
Retailer 3£2,576 GBP
Retailer 10£2,630 GBP
Retailer 6£2,675 GBP
Retailer 5£2,768 GBP
Retailer 4£3,009 GBP
Retailer 9£3,034 GBP
Retailer 7£4,312 GBP
NZ Jewellers£4,581 GBP

27 data points across 10 retailers

14 retailers£1,989 GBP to £4,312 GBP

A
Cheapest Retailer
-
£1,989 GBP
A
Retailer 2
-
£2,105 GBP
View
B+
Retailer 3
-
£2,475 GBP
View
A
Retailer 4
-
£2,576 GBP
View
B+
Retailer 5
-
£2,611 GBP
View
Retailer 6
-
£2,630 GBP
View
Price last confirmed 19 days ago
Retailer 7
-
£2,630 GBP
View
Price last confirmed 21 days ago
A
Retailer 8
-
£2,675 GBP
View
Retailer 9
-
£2,731 GBP
View
Price last confirmed 21 days ago
B+
Retailer 10
-
£2,768 GBP
View
B+
Retailer 11
-
£3,009 GBP
View
Retailer 12
-
£3,034 GBP
View
Price last confirmed 18 days ago
B
Retailer 13
-
£4,312 GBP
View
Most Expensive
NZ Jewellers
b07d9086-d00e-4168-8f64-bdfa64b28c04 · Oct 18
£4,581 GBP
$6,132 USD
View
Price last confirmed 19 days ago
13 more retailers have this diamond
Prices start from £1,989 GBPSave up to £2,324 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
1.70ct Heart
£1,989 GBP