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Radiant|Natural|GIA

1.51ct H SI1 Radiant Natural Diamond

VG • H/SI1 • GIA 6411268329

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate GIA 6411268329

Diamond specifications and retailer prices

From $12,997 AUD
As of November 5, 2026
Save $10,412 AUD (44%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $23,409 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6411268329. Listed at 24 retailers as of November 5, 2026, with prices from $12,997 to $23,409, a $10,412 spread on the same certified stone. NZ Jewellers lists it at $23,409. 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

1.51
Carat
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6411268329
Dimensions8.16 × 5.68 × 3.99 mm
L/W Ratio1.44
Top View
8.16 mm5.68 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6411268329
Side View
Table 77.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 70.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $15,226 AUD|Low: $12,502 AUD|High: $22,198 AUD|Avg: $16,413 AUD|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 10$12,502 AUD
Retailer 3$14,045 AUD
Retailer 11$14,045 AUD
Retailer 4$14,525 AUD
Retailer 1$15,226 AUD
Retailer 2$15,449 AUD
Retailer 9$15,455 AUD
Retailer 5$16,264 AUD
Retailer 6$16,829 AUD
Retailer 7$20,491 AUD
Retailer 8$21,876 AUD

46 data points across 11 retailers

24 retailers$12,997 AUD to $23,409 AUD

Retailer 1
-
$12,502 AUD
Price last confirmed 20 days ago
B
Retailer 2
-
$12,997 AUD
View
B
Retailer 3
-
$13,032 AUD
View
B
Retailer 4
-
$13,166 AUD
View
B
Retailer 5
-
$13,513 AUD
View
B
Retailer 6
-
$13,906 AUD
View
Retailer 7
-
$14,045 AUD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$14,045 AUD
View
Final sale: no returns
B
Retailer 9
-
$14,291 AUD
View
B
Retailer 10
-
$14,525 AUD
View
B
Retailer 11
-
$15,215 AUD
View
B
Retailer 12
-
$15,226 AUD
View
B
Retailer 13
-
$15,449 AUD
View
Retailer 14
-
$15,455 AUD
View
Price last confirmed 15 days ago
B
Retailer 15
-
$16,200 AUD
View
B
Retailer 16
-
$16,264 AUD
View
B
Retailer 17
-
$16,490 AUD
View
B
Retailer 18
-
$16,490 AUD
View
B
Retailer 19
-
$16,829 AUD
View
C
Retailer 20
-
$17,043 AUD
View
C
Retailer 21
-
$17,556 AUD
View
B
Retailer 22
-
$20,491 AUD
View
B
Retailer 23
-
$21,876 AUD
View
Most Expensive
C
NZ Jewellers
9890fb04-3977-4d7a-85b8-e5b3226e767a · Nov 5
$23,409 AUD
$16,084 USD
View
23 more retailers have this diamond
Prices start from $12,997 AUDSave up to $10,412 AUD

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
1.51ct Radiant
$12,997 AUD