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Round|Lab Grown|IGI

1.21ct D VS1 Round Lab Grown Diamond

EX • D/VS1 • IGI LG778645864

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778645864

Diamond specifications and retailer prices

From $268 AUD
As of November 3, 2026
Save $1,455 AUD (84%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,001 AUD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG778645864 or 778645864. Listed at 22 retailers as of November 3, 2026, with a 543% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778645864
Dimensions6.93 × 6.96 × 4.18 mm
L/W Ratio1.00
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
6.93 mm6.96 mm1.21 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778645864
Side View
Table 57.0%Crown 32.1°Girdle: THN-MEDPavilion 40.9°Culet: NoneDepth 60.2%

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: Nov 3
Current: $594 AUD|Low: $256 AUD|High: $1,723 AUD|Avg: $715 AUD|+5.6%
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
November 4, 2026
Retailer 13$268 AUD
Retailer 7$299 AUD
Retailer 6$311 AUD
Retailer 15$332 AUD
Retailer 2$447 AUD
Retailer 11$573 AUD
Retailer 1$594 AUD
Retailer 9$613 AUD
Retailer 5$684 AUD
Retailer 10$809 AUD
Retailer 8$858 AUD
Retailer 4$1,067 AUD
Retailer 3$1,113 AUD
Retailer 12$1,559 AUD
Retailer 14$1,723 AUD

44 data points across 15 retailers

22 retailers$268 AUD to $1,723 AUD

A
Cheapest Retailer
-
$268 AUD
A
Retailer 2
-
$299 AUD
View
Final sale: no returns
A
Retailer 3
-
$311 AUD
View
A
Retailer 4
-
$332 AUD
View
Retailer 5
-
$332 AUD
View
Price last confirmed 10 days ago
A
Retailer 6
-
$367 AUD
View
B+
Retailer 7
-
$447 AUD
View
A
Retailer 8
-
$563 AUD
View
A
Retailer 9
-
$573 AUD
View
B+
Retailer 10
-
$594 AUD
View
B+
Retailer 11
-
$613 AUD
View
B+
Retailer 12
-
$684 AUD
View
B+
Retailer 13
-
$809 AUD
View
B+
Retailer 14
-
$858 AUD
View
B
Retailer 15
-
$1,067 AUD
View
B
Retailer 16
-
$1,081 AUD
View
B
Retailer 17
-
$1,113 AUD
View
B
Retailer 18
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$1,144 AUD
View
B
Retailer 19
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$1,559 AUD
View
B
Retailer 20
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$1,648 AUD
View
B
Retailer 21
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$1,723 AUD
View
Most Expensive
Queensmith
LG778645864 · Oct 27
$3,001 AUD
£1,650 GBP
View
Price last confirmed 7 days ago
21 more retailers have this diamond
Prices start from $268 AUDSave up to $1,455 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
1.21ct Round
$268 AUD