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Round|Lab Grown|IGI

1.20ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG759507239

Shape and cutting style on the report: Round brilliant

Certificate IGI LG759507239

Diamond specifications and retailer prices

From $275 AUD
$193 USD
As of October 29, 2026
Save $1,391 AUD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,666 AUD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.2ct lab-grown round diamond

This 1.2ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG759507239 or 759507239. Listed at 19 retailers as of October 29, 2026, with prices from $275 to $1,666, a $1,391 spread on the same certified stone. Reve Diamonds lists it at $1,666. 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

1.20
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG759507239
Dimensions6.82 × 6.76 × 4.23 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
6.82 mm6.76 mm1.20 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG759507239
Side View
Table 59.0%Crown 34.5°Girdle: MediumPavilion 41.5°Culet: NoneDepth 62.3%

Caratlytics Score

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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: Oct 29
Current: $674 AUD|Low: $260 AUD|High: $1,666 AUD|Avg: $715 AUD|-0.0%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Reve Diamonds
October 30, 2026
Retailer 8$275 AUD
Retailer 2$307 AUD
Retailer 14$319 AUD
Retailer 3$340 AUD
Retailer 4$340 AUD
Retailer 16$544 AUD
Retailer 5$594 AUD
Retailer 11$617 AUD
Retailer 13$652 AUD
Retailer 1$674 AUD
Retailer 18$689 AUD
Retailer 17$690 AUD
Retailer 15$738 AUD
Retailer 10$897 AUD
Retailer 6$908 AUD
Retailer 9$1,093 AUD
Retailer 7$1,170 AUD
Retailer 12$1,598 AUD
Reve Diamonds$1,666 AUD

35 data points across 19 retailers

19 retailers$275 AUD to $1,666 AUD

A
Cheapest Retailer
-
$275 AUD
$193 USD
A
Retailer 2
-
$307 AUD
$216 USD
View
Final sale: no returns
A
Retailer 3
-
$319 AUD
$224 USD
View
A
Retailer 4
-
$340 AUD
$239 USD
View
A
Retailer 5
-
$340 AUD
$239 USD
View
B+
Retailer 6
-
$544 AUD
$382 USD
View
B+
Retailer 7
-
$594 AUD
$417 USD
View
B+
Retailer 8
-
$617 AUD
£341 GBP
View
B+
Retailer 9
-
$652 AUD
€436 EUR
View
B+
Retailer 10
-
$674 AUD
£373 GBP
View
B+
Retailer 11
-
$689 AUD
$484 USD
View
Retailer 12
-
$690 AUD
$485 USD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$738 AUD
View
B+
Retailer 14
-
$897 AUD
$630 USD
View
B
Retailer 15
-
$908 AUD
$638 USD
View
B
Retailer 16
-
$1,093 AUD
$768 USD
View
B
Retailer 17
-
$1,170 AUD
$822 USD
View
B
Retailer 18
-
$1,598 AUD
£884 GBP
View
Most Expensive
B
Reve Diamonds
368F2709A · Oct 30
$1,666 AUD
$1,170 USD
View
18 more retailers have this diamond
Prices start from $275 AUDSave up to $1,391 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
1.20ct Round
$275 AUD