Radiant|Natural|GIA

1.50ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 6541435684

Certificate GIA 6541435684

Diamond specifications and retailer prices

From $3,277 USD
HK$25,600 HKD
As of November 1, 2026
Save $3,563 USD (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,694 USD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded I 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 6541435684. Listed at 19 retailers as of November 1, 2026, with a 109% 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

1.50
Carat
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6541435684
Dimensions7.54 × 5.71 × 3.90 mm
L/W Ratio1.32
Top View
7.54 mm5.71 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6541435684
Side View
Table 69.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.4%

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: $4,393 USD|Low: $3,277 USD|High: $7,168 USD|Avg: $4,580 USD|-2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 11$3,277 USD
Retailer 12$3,403 USD
Retailer 5$3,489 USD
Retailer 9$3,843 USD
Retailer 3$4,249 USD
Retailer 1$4,393 USD
Retailer 2$4,416 USD
Retailer 7$4,443 USD
Retailer 4$4,743 USD
Retailer 6$4,858 USD
Retailer 10$5,279 USD
Retailer 8$6,840 USD

33 data points across 12 retailers

19 retailers$3,277 USD to $6,840 USD

A
Cheapest Retailer
-
$3,277 USD
HK$25,600 HKD
A
Retailer 2
-
$3,403 USD
SGD 4,599 SGD
View
A
Retailer 3
-
$3,489 USD
₹332,258 INR
View
A
Retailer 4
-
$3,843 USD
View
A
Retailer 5
-
$4,092 USD
View
A
Retailer 6
-
$4,095 USD
View
Retailer 7
-
$4,249 USD
SGD 5,742 SGD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$4,341 USD
A$6,678 AUD
View
A
Retailer 9
-
$4,393 USD
£3,459 GBP
View
Retailer 10
-
$4,416 USD
View
Price last confirmed 17 days ago
Retailer 11
-
$4,416 USD
View
Price last confirmed 15 days ago
Retailer 12
-
$4,416 USD
View
Price last confirmed 18 days ago
A
Retailer 13
-
$4,443 USD
View
Retailer 14
-
$4,743 USD
A$7,297 AUD
View
Price last confirmed 24 days ago
A
Retailer 15
-
$4,858 USD
€4,627 EUR
View
Retailer 16
-
$5,096 USD
View
Price last confirmed 15 days ago
A
Retailer 17
-
$5,279 USD
ZAR 85,276 ZAR
View
B+
Retailer 18
-
$6,840 USD
£5,386 GBP
View
Most Expensive
NZ Jewellers
f4b5e338-f2dd-4ab7-9904-b9e2ae9bf31d · Oct 17
$7,694 USD
View
Price last confirmed 16 days ago
18 more retailers have this diamond
Prices start from $3,277 USDSave up to $3,563 USD

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
1.50ct Radiant
$3,277 USD