CaratHunter
Plans
Radiant|Natural|GIA

1.51ct F SI1 Radiant Natural Diamond

VG • F/SI1 • GIA 6552489335

Certificate GIA 6552489335

Diamond specifications and retailer prices

From $11,345 AUD
$7,951 USD
As of November 2, 2026
Save $9,089 AUD (44%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $20,435 AUD at NZ Jewellers · As of October 30, 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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6552489335. Listed at 18 retailers as of October 30, 2026, with prices from $11,345 to $20,435, a $9,089 spread on the same certified stone. NZ Jewellers lists it at $20,435. 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
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle49.15°
Pavilion angle35.48°
OriginNatural
Grading LabGIA
CertificateGIA 6552489335
Dimensions7.92 × 5.75 × 3.83 mm
L/W Ratio1.38
Girdle conditionVery Thick
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.92 mm5.75 mm1.51 ctF / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552489335
Side View
Table 70.0%Crown 49.15°GirdlePavilion 35.48°Culet: NoneDepth 66.5%

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 2
Current: $13,717 AUD|Low: $11,345 AUD|High: $19,379 AUD|Avg: $14,426 AUD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 3$11,345 AUD
Retailer 12$12,260 AUD
Retailer 2$12,363 AUD
Retailer 6$13,402 AUD
Retailer 10$13,464 AUD
Retailer 11$13,487 AUD
Retailer 1$13,717 AUD
Retailer 9$14,058 AUD
Retailer 4$15,325 AUD
Retailer 5$15,444 AUD
Retailer 8$18,012 AUD
Retailer 7$19,147 AUD

41 data points across 12 retailers

18 retailers$11,345 AUD to $20,435 AUD

B+
Cheapest Retailer
-
$11,345 AUD
$7,951 USD
B+
Retailer 2
-
$11,479 AUD
$8,045 USD
View
B
Retailer 3
-
$12,179 AUD
$8,535 USD
View
B
Retailer 4
-
$12,260 AUD
$8,592 USD
View
B
Retailer 5
-
$12,363 AUD
$8,664 USD
View
B
Retailer 6
-
$13,070 AUD
$9,159 USD
View
B
Retailer 7
-
$13,282 AUD
$9,308 USD
View
B+
Retailer 8
-
$13,402 AUD
£7,396 GBP
View
Retailer 9
-
$13,464 AUD
View
Price last confirmed 10 days ago
B
Retailer 10
-
$13,487 AUD
$9,452 USD
View
B
Retailer 11
-
$13,717 AUD
£7,569 GBP
View
B
Retailer 12
-
$14,058 AUD
$9,852 USD
View
B
Retailer 13
-
$15,325 AUD
$10,740 USD
View
B
Retailer 14
-
$15,444 AUD
€10,308 EUR
View
Retailer 15
-
$16,138 AUD
$11,310 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
$18,012 AUD
ZAR 203,923 ZAR
View
B
Retailer 17
-
$19,147 AUD
£10,566 GBP
View
Most Expensive
C
NZ Jewellers
2de2635f-1403-4544-9f2b-bc92c675e8ae · Oct 30
$20,435 AUD
$14,321 USD
View
17 more retailers have this diamond
Prices start from $11,345 AUDSave up to $9,089 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
$11,345 AUD