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Heart|Natural|GIA

1.70ct H SI1 Heart Natural Diamond

VG • H/SI1 • GIA 6445201943

Certificate GIA 6445201943

Diamond specifications and retailer prices

From £3,832 GBP
$5,135 USD
As of November 1, 2026
Save £5,409 GBP (59%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £9,242 GBP at NZ Jewellers · As of October 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6445201943. Listed at 20 retailers as of October 30, 2026, with prices from £3,832 to £9,242, a £5,409 spread on the same certified stone. NZ Jewellers lists it at £9,242. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.70
Carat
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle38.5°
OriginNatural
Grading LabGIA
CertificateGIA 6445201943
Dimensions8.22 × 7.66 × 4.21 mm
L/W Ratio1.07
Top View
8.22 mm7.66 mm1.70 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6445201943
Side View
Table 55.0%Crown 35.9°Girdle: THK-VTKPavilion 38.5°Culet: NoneDepth 55.0%

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: £9,242 GBP|Low: £3,832 GBP|High: £9,242 GBP|Avg: £5,495 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
Retailer 18
Retailer 19
Retailer 20
November 2, 2026
Retailer 7£3,832 GBP
Retailer 12£4,366 GBP
Retailer 5£4,621 GBP
Retailer 17£4,621 GBP
Retailer 3£4,646 GBP
Retailer 9£4,926 GBP
Retailer 19£5,006 GBP
Retailer 18£5,083 GBP
Retailer 6£5,171 GBP
Retailer 2£5,206 GBP
Retailer 13£5,210 GBP
Retailer 20£5,363 GBP
Retailer 4£5,538 GBP
Retailer 8£5,538 GBP
Retailer 11£5,724 GBP
Retailer 16£5,776 GBP
Retailer 10£6,089 GBP
Retailer 15£6,789 GBP
Retailer 14£7,701 GBP
NZ Jewellers£9,242 GBP

33 data points across 20 retailers

20 retailers£3,832 GBP to £9,242 GBP

B+
Cheapest Retailer
-
£3,832 GBP
$5,135 USD
B+
Retailer 2
-
£4,366 GBP
$5,850 USD
View
B+
Retailer 3
-
£4,621 GBP
$6,191 USD
View
Final sale: no returns
B+
Retailer 4
-
£4,621 GBP
$6,191 USD
View
B+
Retailer 5
-
£4,646 GBP
$6,225 USD
View
B
Retailer 6
-
£4,926 GBP
$6,600 USD
View
B
Retailer 7
-
£5,006 GBP
$6,707 USD
View
B
Retailer 8
-
£5,083 GBP
$6,811 USD
View
B+
Retailer 9
-
£5,171 GBP
$6,929 USD
View
B+
Retailer 10
-
£5,206 GBP
View
B+
Retailer 11
-
£5,210 GBP
View
Retailer 12
-
£5,363 GBP
A$11,055 AUD
View
Price last confirmed 11 days ago
B
Retailer 13
-
£5,538 GBP
$7,420 USD
View
B
Retailer 14
-
£5,538 GBP
$7,420 USD
View
B
Retailer 15
-
£5,724 GBP
$7,670 USD
View
B
Retailer 16
-
£5,776 GBP
$7,739 USD
View
Retailer 17
-
£6,089 GBP
$8,158 USD
View
Price last confirmed 10 days ago
B
Retailer 18
-
£6,789 GBP
ZAR 146,956 ZAR
View
B
Retailer 19
-
£7,701 GBP
View
Most Expensive
B
NZ Jewellers
7e842fc7-925f-4058-8006-f9d6035f02ca · Oct 30
£9,242 GBP
$12,383 USD
View
19 more retailers have this diamond
Prices start from £3,832 GBPSave up to £5,409 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
£3,832 GBP