CaratHunter
Plans
Radiant|Natural|GIA

1.70ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 6542405819

Certificate GIA 6542405819

Diamond specifications and retailer prices

From £5,751 GBP
$7,717 USD
As of November 1, 2026
Save £6,533 GBP (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £12,284 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.7ct natural radiant diamond

This 1.7ct natural radiant sits in the one-and-a-half to two carat band, graded H 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 6542405819. Listed at 15 retailers as of October 30, 2026, with prices from £5,751 to £12,284, a £6,533 spread on the same certified stone. NZ Jewellers lists it at £12,284. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542405819
Dimensions7.80 × 5.99 × 4.17 mm
L/W Ratio1.30
Culet sizeNone
Top View
7.80 mm5.99 mm1.70 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542405819
Side View
Table 68.0%CrownGirdle: ThickPavilionCulet: NoneDepth 69.7%

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: £6,920 GBP|Low: £5,751 GBP|High: £10,359 GBP|Avg: £7,225 GBP|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9£5,751 GBP
Retailer 10£6,111 GBP
Retailer 3£6,142 GBP
Retailer 11£6,193 GBP
Retailer 2£6,756 GBP
Retailer 8£6,787 GBP
Retailer 5£6,860 GBP
Retailer 1£6,920 GBP
Retailer 4£7,626 GBP
Retailer 7£9,023 GBP
Retailer 6£10,235 GBP

38 data points across 11 retailers

15 retailers£5,751 GBP to £12,284 GBP

B+
Cheapest Retailer
-
£5,751 GBP
$7,717 USD
B+
Retailer 2
-
£6,111 GBP
$8,200 USD
View
B+
Retailer 3
-
£6,142 GBP
$8,242 USD
View
B+
Retailer 4
-
£6,193 GBP
$8,311 USD
View
B+
Retailer 5
-
£6,654 GBP
$8,929 USD
View
B+
Retailer 6
-
£6,756 GBP
$9,066 USD
View
Retailer 7
-
£6,787 GBP
A$14,012 AUD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
£6,860 GBP
View
B+
Retailer 9
-
£6,920 GBP
View
B
Retailer 10
-
£7,626 GBP
€9,746 EUR
View
B
Retailer 11
-
£7,677 GBP
$10,302 USD
View
Retailer 12
-
£8,085 GBP
$10,850 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
£9,023 GBP
ZAR 195,607 ZAR
View
B
Retailer 14
-
£10,235 GBP
View
Most Expensive
B
NZ Jewellers
1d54afd2-dea2-45ca-b8fb-7682312c287a · Oct 30
£12,284 GBP
$16,484 USD
View
14 more retailers have this diamond
Prices start from £5,751 GBPSave up to £6,533 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 Radiant
£5,751 GBP