CaratHunter
Plans
Round|Lab Grown|IGI

0.51ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG685523343

Shape and cutting style on the report: Round brilliant

Certificate IGI LG685523343

Diamond specifications and retailer prices

From $132 AUD
$93 USD
As of October 29, 2026
Save $1,079 AUD (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,211 AUD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685523343 or 685523343. Listed at 15 retailers as of October 29, 2026, with prices from $132 to $1,211, a $1,079 spread on the same certified stone. Reve Diamonds lists it at $1,211. 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

0.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685523343
Dimensions5.12 × 5.16 × 3.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.12 mm5.16 mm0.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685523343
Side View
Table 59.0%Crown 35.8°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.2%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $580 AUD|Low: $125 AUD|High: $1,211 AUD|Avg: $385 AUD|-4.3%
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
Reve Diamonds
October 31, 2026
Retailer 6$132 AUD
Retailer 8$138 AUD
Retailer 12$144 AUD
Retailer 7$164 AUD
Retailer 4$174 AUD
Retailer 2$235 AUD
Retailer 9$282 AUD
Retailer 11$329 AUD
Retailer 14$341 AUD
Retailer 5$379 AUD
Retailer 3$494 AUD
Retailer 10$495 AUD
Retailer 1$580 AUD
Retailer 13$1,208 AUD
Reve Diamonds$1,211 AUD

43 data points across 15 retailers

15 retailers$132 AUD to $1,211 AUD

A
Cheapest Retailer
-
$132 AUD
$93 USD
A
Retailer 2
-
$138 AUD
$97 USD
View
Final sale: no returns
A
Retailer 3
-
$144 AUD
$101 USD
View
A
Retailer 4
-
$164 AUD
$115 USD
View
A
Retailer 5
-
$174 AUD
$122 USD
View
Retailer 6
-
$235 AUD
$165 USD
View
Price last confirmed 10 days ago
A
Retailer 7
-
$282 AUD
£156 GBP
View
A
Retailer 8
-
$329 AUD
$231 USD
View
B+
Retailer 9
-
$341 AUD
€228 EUR
View
B+
Retailer 10
-
$379 AUD
$266 USD
View
B+
Retailer 11
-
$494 AUD
$347 USD
View
B+
Retailer 12
-
$495 AUD
$348 USD
View
B+
Retailer 13
-
$580 AUD
$407 USD
View
B
Retailer 14
-
$1,208 AUD
£668 GBP
View
Most Expensive
B
Reve Diamonds
CC77D7D47 · Oct 30
$1,211 AUD
$851 USD
View
14 more retailers have this diamond
Prices start from $132 AUDSave up to $1,079 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.

A
0.51ct Round
$132 AUD