Radiant|Natural|GIA

0.70ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 3425623780

Certificate GIA 3425623780

Diamond specifications and retailer prices

From £353 GBP
HK$3,700 HKD
As of November 1, 2026
Save £609 GBP (63%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,306 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 0.7ct natural radiant diamond

This 0.7ct natural radiant sits in the half to three-quarter 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 3425623780. Listed at 18 retailers as of November 1, 2026, with a 172% 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

0.70
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle42.75°
Pavilion angle37.49°
OriginNatural
Grading LabGIA
CertificateGIA 3425623780
Dimensions6.49 × 4.29 × 2.97 mm
L/W Ratio1.51
Top View
6.49 mm4.29 mm0.70 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3425623780
Side View
Table 62.0%Crown 42.75°Girdle: MED-STKPavilion 37.49°Culet: NoneDepth 69.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £525 GBP|Low: £353 GBP|High: £973 GBP|Avg: £539 GBP|-1.1%
Retailer 1
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
November 1, 2026
Retailer 4£353 GBP
Retailer 14£384 GBP
Retailer 13£414 GBP
Retailer 12£425 GBP
Retailer 11£435 GBP
Retailer 5£449 GBP
Retailer 7£464 GBP
Retailer 1£525 GBP
Retailer 6£559 GBP
Retailer 3£597 GBP
Retailer 9£619 GBP
Retailer 10£622 GBP
Retailer 2£626 GBP
Retailer 8£962 GBP

37 data points across 14 retailers

18 retailers£353 GBP to £962 GBP

A
Cheapest Retailer
-
£353 GBP
HK$3,700 HKD
A
Retailer 2
-
£384 GBP
$515 USD
View
Final sale: no returns
A
Retailer 3
-
£414 GBP
SGD 749 SGD
View
Retailer 4
-
£425 GBP
$570 USD
View
Price last confirmed 11 days ago
A
Retailer 5
-
£431 GBP
SGD 780 SGD
View
A
Retailer 6
-
£435 GBP
$583 USD
View
Retailer 7
-
£449 GBP
$601 USD
View
Price last confirmed 21 days ago
Retailer 8
-
£449 GBP
$601 USD
View
Price last confirmed 32 days ago
A
Retailer 9
-
£464 GBP
View
Retailer 10
-
£481 GBP
$644 USD
View
Price last confirmed 23 days ago
A
Retailer 11
-
£525 GBP
View
B+
Retailer 12
-
£570 GBP
$764 USD
View
B+
Retailer 13
-
£597 GBP
$799 USD
View
B+
Retailer 14
-
£619 GBP
€790 EUR
View
B+
Retailer 15
-
£622 GBP
ZAR 13,464 ZAR
View
Retailer 16
-
£626 GBP
A$1,291 AUD
View
Price last confirmed 29 days ago
B
Retailer 17
-
£962 GBP
View
Most Expensive
NZ Jewellers
85b449e3-7d17-4439-8f9f-b51f593a776b · Sep 30
£1,306 GBP
$1,750 USD
View
Price last confirmed 32 days ago
17 more retailers have this diamond
Prices start from £353 GBPSave up to £609 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
0.70ct Radiant
£353 GBP