Heart|Natural|GIA

1.70ct D SI1 Heart Natural Diamond

ID • D/SI1 • GIA 5232721467

Certificate GIA 5232721467

Diamond specifications and retailer prices

From £5,221 GBP
$6,995 USD
As of October 31, 2026
Save £2,659 GBP (34%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £9,592 GBP at NZ Jewellers · As of September 28, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5232721467. Listed at 9 retailers as of October 31, 2026, with a 51% 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.72°
Pavilion angle41.27°
OriginNatural
Grading LabGIA
CertificateGIA 5232721467
Dimensions8.31 × 7.53 × 4.95 mm
L/W Ratio1.10
Girdle conditionThick
Key to symbols
Crystal, Feather, Cavity, Needle
Top View
8.31 mm7.53 mm1.70 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5232721467
Side View
Table 61.0%Crown 36.72°Girdle: MED-STKPavilion 41.27°Culet: NoneDepth 59.6%

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: Oct 31
Current: £5,290 GBP|Low: £5,221 GBP|High: £8,089 GBP|Avg: £6,334 GBP|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 3£5,221 GBP
Retailer 1£5,290 GBP
Retailer 4£5,529 GBP
Retailer 6£6,269 GBP
Retailer 5£6,484 GBP
Retailer 7£6,538 GBP
Retailer 2£7,879 GBP

34 data points across 7 retailers

9 retailers£5,221 GBP to £7,879 GBP

A
Cheapest Retailer
-
£5,221 GBP
$6,995 USD
A
Retailer 2
-
£5,290 GBP
View
Retailer 3
-
£5,529 GBP
A$11,398 AUD
View
Price last confirmed 10 days ago
Retailer 4
-
£5,735 GBP
$7,684 USD
View
Price last confirmed 40 days ago
Retailer 5
-
£5,735 GBP
$7,684 USD
View
Price last confirmed 24 days ago
Retailer 6
-
£5,823 GBP
$7,802 USD
View
Price last confirmed 31 days ago
B+
Retailer 7
-
£7,879 GBP
View
Retailer 8
-
£9,592 GBP
$12,852 USD
View
Price last confirmed 32 days ago
Most Expensive
NZ Jewellers
d8ded18b-163d-4a13-9343-b9eb7f2713a2 · Sep 28
£9,592 GBP
$12,852 USD
View
Price last confirmed 34 days ago
8 more retailers have this diamond
Prices start from £5,221 GBPSave up to £2,659 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
£5,221 GBP